One night an orphan and I offered the prayers behind the Prophet ﷺ in my house and my mother (Um Sulaim) was standing behind us (by herself forming a row).  

صَلَّيْتُ أَنَا وَيَتِيمٌ فِي بَيْتِنَا خَلْفَ النَّبِيِّ ﷺ وَأُمِّي أُمُّ سُلَيْمٍ خَلْفَنَا